Have any of you tried this oil in your OPE? It seems like a good fit for most of my fleet, other than the snow blower. Presently I run M1 10w-30 in most of my fleet, but some of it has Rotella T6 5w-40. The generators and the rototiller currently have T6 5w-40 in the sump. I have a Billy Goat leaf Vacuum with a Honda GSV-190 motor that is a really tough pull below 50 degrees with that 10w-30. Please let us know your thoughts on using 15w-40 oils in equipment stored outdoors in temperatures below 50 F.